Method and device for identifying universal serial bus (USB) insertion or charger insertion of mobile terminal
US8756358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2010 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Oct 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72409
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a method to identify whether a USB or a charger is plugged into a mobile terminal and an identification device thereof. The identification device comprises a USB interface module connected with an external power supply device, an interface detection and control module, an electronic switch module, a charging switch module, an identification module and a baseband USB data transceiving module. With the method to identify whether a USB or a charger is plugged into a mobile terminal and an identification device thereof provided by the present invention, when an external power supply is plugged in, the identification device makes the terminal to preferentially enter a USB mode, while, according to the ultimately detected D-signal state, interrupt responses can be flexibly generated to accurately determine the presence of a USB or a charger. It can quickly and accurately identify the type of USB or charger plugged into the terminal. The technology plays a particular important role for a 3G mobile phone terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.